BE 必要驗收案例

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{
  "schema_version": 1,
  "ticket": "DEMO-PAYMENT",
  "cases": [
    {
      "id": "BE-PAID-REJECT", "requirement": "AC-DEMO-PAY-001", "owner": "be", "review_role": "qa",
      "given": "paid-order 為 PAID，已有一筆付款，再 POST /payments",
      "expected": "409、ORDER_ALREADY_PAID，訂單狀態與付款筆數完全不變",
      "test": {"file": "independent/cases.py", "classname": "payment_api", "name": "reject_paid_order"}
    },
    {
      "id": "BE-PENDING-PAY", "requirement": "AC-DEMO-PAY-002", "owner": "be", "review_role": "qa",
      "given": "pending-order 為 PENDING 且沒有付款，POST /payments",
      "expected": "200、回應 PAID，DB 訂單變 PAID 且只有一筆付款",
      "test": {"file": "independent/cases.py", "classname": "payment_api", "name": "pay_pending_order"}
    },
    {
      "id": "BE-CONCURRENT", "requirement": "BR-DEMO-PAY-001", "owner": "be", "review_role": "qa",
      "given": "同時對 pending-order 送出兩筆真 HTTP 付款請求",
      "expected": "一筆200一筆409，DB狀態PAID且只有一筆付款",
      "test": {"file": "independent/cases.py", "classname": "payment_api", "name": "concurrent_payment_once"}
    },
    {
      "id": "BE-INVALID-REQUEST", "requirement": "AC-DEMO-PAY-003", "owner": "be", "review_role": "qa",
      "given": "POST /payments，order_id 為空字串",
      "expected": "400、INVALID_REQUEST，既有未付款訂單與付款筆數不變",
      "test": {"file": "independent/cases.py", "classname": "payment_api", "name": "reject_invalid_request"}
    },
    {
      "id": "BE-MISSING-ORDER", "requirement": "AC-DEMO-PAY-004", "owner": "be", "review_role": "qa",
      "given": "POST /payments，order_id 為不存在的 unknown-order",
      "expected": "404、ORDER_NOT_FOUND，不新增此訂單或付款",
      "test": {"file": "independent/cases.py", "classname": "payment_api", "name": "reject_missing_order"}
    }
  ]
}